<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
  <!-- 引入vue -->
  <script type="text/javascript" src="../js/vue.js"></script>
</head>

<body>
  <div id="root">
    <h2>人员列表</h2>
    <input type="text" placeholder="请输入名字" v-model="keyWord">
    <button @click="sortType = 2">年龄升序</button>
    <button @click="sortType = 1">年龄降序</button>
    <button @click="sortType = 0">原顺序</button>
    <ul>
      <li v-for="(p,index) of filPersons" :key="p.id">
        {{p.name}}-{{p.age}}-{{p.sex}}
        <input type="text">
      </li>
    </ul>
  </div>
  <script type="text/javascript">
    Vue.config.productionTip = false //阻止 vue 在启动时生成生产提示。、
    new Vue({
      el: '#root',
      data: {
        keyWord: '',
        sortType: 0,//0 原排序  1 降序  2 升序
        persons: [
          { id: '001', name: '马冬梅', age: 19, sex: '女' },
          { id: '002', name: '周冬雨', age: 20, sex: '女' },
          { id: '003', name: '周杰伦', age: 21, sex: '男' },
          { id: '004', name: '温兆伦', age: 22, sex: '男' }
        ]
      },
      computed: {
        filPersons() {
          const arr = this.persons.filter((p) => {
            return p.name.indexOf(this.keyWord) !== -1
          })
          // 判断一下是否需要排序
          // 运用布尔值 0 false   1 2 true 
          if (this.sortType) {
            arr.sort((p1, p2) => {
              return this.sortType === 1 ? p2.age - p1.age : p1.age - p2.age
            })
          }
          return arr
        }
      }
    })
  </script>
</body>

</html>